Candidates who can attest to at least 500 hours of actual operating experience on digger derricks during their period of certification do not need to take a Practical Exam to recertify.

The Digger Derrick Operator Recertification Written Examination consists of 40 multiple-choice questions with a time limit of one hour.

Recertification candidates are allowed two attempts to pass the Digger Derrick Operator Recertification Written Exam before their certification expires. Candidates who are unsuccessful after two attempts must take and pass the regular Digger Derrick Operator Written Exam.

Candidates who can attest to at least 500 hours of actual operating experience on digger derricks during their period of certification do not need to take the Practical Exam to recertify.

Recertification candidates who do need to take the Practical Exam for any reason, however, must do so before their certification expires. There is no grace period after their certification’s expiration date. Candidates whose certification has lapsed must take the full Written and Practical Examinations to be certified again.